Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2a06:e881:9700::'
+290
ERRNo PTR record availible DNS server 'ns4.apnic.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.9.1.8.8.e.6.0.a.2.ip6.arpa'.